Four-rooted mandibular first molar with an unusual developmental root fusion line: a case report.

The paper describes the anatomical variation of four roots in a mandibular permanent first molar diagnosed using multiple angulated preoperative radiographs and its successful nonsurgical endodontic management. Careful observation and exploration of the pulpal floor using a dental operating microscope revealed a peculiar developmental root fusion line on the pulp chamber floor. Based on the above observation, a correlation between this unusual line and the existence of additional roots has been proposed and discussed.

The Effect of 4% Lignocaine gel, 5% Amiloride HCl and 10% Chlorpromazine on E.faecalis.

Introduction: Thorough disinfection of the root canal system is essential for the success of root canal therapy. Enterococcus faecalis is the most frequently found species in persistent/secondary intracanal infection associated endodontic treatment failure. The aim of this study was to evaluate the disinfection of dentinal tubules using 10% Chlorpromazine, 4% Lignocaine gel, 5% Amiloride hydrochloride in comparison with 2% chlorhexidine gel.

Evaluation of post-surface conditioning to improve interfacial adhesion in post-core restorations.

Aim: To examine the influence of different post-surface treatments on the interfacial strength between epoxy resin-based fiber posts and methacrylate-based resin composites that are employed as core build-up materials.

Materials And Methods: Forty clear posts were divided into four groups of 10 each. The different surface treatments used were etching with alkaline potassium permanganate, 10% hydrogen peroxide, 37% phosphoric acid, and silanization alone.

Root canal morphology of maxillary second premolars in an Indian population.

Introduction: The purpose of this study was to investigate root canal morphology of maxillary second premolars in an Indian population.

Materials And Methods: Two hundred maxillary second premolars were collected, stained, decalcified, and cleared. Cleared teeth were examined in a steromicroscope under 7.

Retrieval of a separated instrument using Masserann technique.

The fracture of endodontic instruments is a procedural problem creating a major obstacle to normal routine therapy. The separated instrument, particularly a broken file, leads to metallic obstruction in the root canal and impedes efficient cleaning and shaping. When an attempt to bypass such a fragment becomes difficult, it should be retrieved by mechanical devices.